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Posted to issues@spark.apache.org by "Gengliang Wang (Jira)" <ji...@apache.org> on 2021/04/23 14:53:00 UTC

[jira] [Updated] (SPARK-35161) Error-handling SQL functions

     [ https://issues.apache.org/jira/browse/SPARK-35161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gengliang Wang updated SPARK-35161:
-----------------------------------
    Summary: Error-handling SQL functions  (was: Safe version SQL functions)

> Error-handling SQL functions
> ----------------------------
>
>                 Key: SPARK-35161
>                 URL: https://issues.apache.org/jira/browse/SPARK-35161
>             Project: Spark
>          Issue Type: Umbrella
>          Components: SQL
>    Affects Versions: 3.2.0
>            Reporter: Gengliang Wang
>            Priority: Major
>
> Create new safe version SQL functions for existing SQL functions/operators, which returns NULL if overflow/error occurs. So that:
> 1. Users can manage to finish queries without interruptions in ANSI mode.
> 2. Users can get NULLs instead of unreasonable results if overflow occurs when ANSI mode is off.
> For example, the behavior of the following SQL operations is unreasonable:
> {code:java}
> 2147483647 + 2 => -2147483647
> CAST(2147483648L AS INT) => -2147483648
> {code}
> With the new safe version SQL functions:
> {code:java}
> TRY_ADD(2147483647, 2) => null
> TRY_CAST(2147483648L AS INT) => null
> {code}



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